This study aims to apply and assess the clinical feasibility of a health behavior theory-based ecological nutrition intervention program, providing nutrition care tailored to the unmet needs of esophageal cancer survivors after surgery. Esophageal cancer survivors will receive a 4-week nutrition intervention program tailored to their individual nutritional needs. The program includes providing nutritional guidelines, customized care food, encouraging walking through a wearable device, and weekly telephone counseling. The evaluation of the program will assess food intake, adherence to dietary guidelines, activity level, nutritional indicators (such as PNI and NRI), weight change, fatigue, symptoms, quality of life, and satisfaction with meals and services. Additionally, interviews will be conducted after the intervention to evaluate the patient's experience.